FIELD: physics.
SUBSTANCE: in the method of generating directional acoustic radiation using multielement antenna arrays, before starting work, a signal is successively transmitted to each element of the antenna array, the obtained radiation is picked up by a microphone, the obtained result is compared with a given sound pressure level, and after checking all elements of the antenna array, those elements whose sound pressure level is equal to zero or less than the required level are replaced. The apparatus further includes a microphone and series-connected microcontroller, relay control unit and relay unit.
EFFECT: high reliability of the apparatus, high radiation power or level of the received signal.
3 cl, 1 dwg
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